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A Blower Door test is used to measure the airtightness of a building by quantifying its air leakage. The test involves using a large fan, temporarily mounted in an exterior doorway or other such opening, to either pressurize or depressurize the building.

Wow! A Passivhaus that consumes less than predicted by the PHPP!. Olloki is a single-family home in Navarra, northern Spain, which I recently certified to Passivhaus Plus standard.

The Passivhaus Planning Package (PHPP) is an energy modelling and certification tool developed by the Passivhaus Institute in Germany. Used worldwide for the planning, design, and verification of Passivhaus buildings, the PHPP provides an accurate and accessible way for professionals to model energy performance.

Success in the 3rd Edition of our “Construction Verifier” Course: new students certified by the Passivhaus Institute We are thrilled to announce that the students of the 3rd edition of our “Construction Verifier” course have successfully passed the official exam by the Passivhaus Institute, earning the Construction Verifier certification. After a month of intensive training, …

Casa SG Magi: a deep energy retrofit in Sitges Casa SG Magi is an exemplary model of comprehensive energy renovation in Sitges, showcasing a strong commitment to sustainability and energy efficiency. Designed by Sergi Gargallo from SGArq Passivhaus Architecture, and certified by Oliver Style from Praxis Resilient Buildings, this single-family home, originally built in 1953, …

Praxis Resilient Buildings is proud to announce the Passivhaus Classic certification of Mirador de Gracia, Catalonia’s first certified care home designed to meet rigorous energy efficiency standards.

We’re very excited to have won two coveted industry awards, as a company recognized for its commitment to sustainable construction and resilience in architecture.

Praxis has qualified as an airtightness testing laboratory for building quality control, an important recognition from the Spanish Ministry of Transport, Mobility and Urban Agenda

Two recently completed care homes in Barcelona, now in the final stages of Passivhaus Certification, have reached an outstanding n50=0.6 ACH in their final Blower Door tests.

Our experience with Site Supervisor and Construction Verifier training is that the courses provide architects and engineers with the tools they need for successful site supervision and navigation of the certification process, and deliver important on-site savings for developers and contractors. 

The International Passive House Conference is a benchmark event in the construction sector, where professionals from all over the world meet to analyze the latest trends in Passivhaus and high performance buildings. Held in the alpine city of Innsbruck in Austria, the event combined technical presentations, visits to passivhaus buildings and an exhibition of innovative materials and components for sustainable and energy efficient construction.

Can Naiades is a single-family, 4 bedroom, 2 storey Passivhaus Plus home, located in Sant Julia d’Alfou, Spain. Designed by Daniel Tigges from Tigges Architekt, and Praxis Resilient Buildings providing Passivhaus design.

Terrassa Haus not only showcases the feasibility of Passivhaus principles in multi-residential developments but also demonstrates the economic viability of sustainable building practices. By prioritizing energy efficiency and environmental sustainability, Terrassa Haus offers residents a comfortable, healthy living environment while significantly reducing their carbon footprint.

Premium Passive House in Sant Pere de Ribes. A building that achieves Passivhaus Premium certification generates, 3 to 4 more energy than it consumes, offering optimal thermal comfort, impeccable air quality and absurdly low energy bills.

In the heart of Andorra, Europe’s 6th smallest state, a groundbreaking architectural marvel named “El Niu” is redefining sustainable living. Meaning “The Nest” in Catalan, El Niu is a testament to innovative design, energy efficiency, and environmental consciousness.

Given the environmental impact of the construction sector- responsible for 40% of the total primary energy consumption of the European Union- reducing both the embodied energy of materials at manufacturing stage and minimising operational energy consumption in buildings are urgent tasks.

LILU’s House is the home referred to in the first story above, and it really works. It brings together, under one roof, an office, a home, and a research unit on timber construction. Developed by Pere Linares and Montserrat Lucas, the house has a treated floor area of 142 m2 distributed over two floors.

Given ever more frequent heat waves and the increasing need for active cooling in Passivhaus residential buildings, the issue of correctly sizing cooling equipment is key if we are to maintain thermal comfort, at low power.